Well sure, you can have different code that does the same thing, gives the same result. Sometimes it is just that different people use different selectors to target an element. For example, some can suggest targeting a card in Dawn theme with “#Slide-template–15968257704025__featured_collection-1” that could work at the moment but if you changethe layout, remove that section and add it again it will get a new id so that CSS will not work, in that case. But also you could see “.grid__item” again could work but also can make changes to some other section you do not want. So it should be targeted in a correct way.
They have different names but probably same purpose: to me main CSS file of them hold a lot of styles that are used in the theme. You can name it however you want but it have to be included in theme.liquid file. So different themes, different names.
Because some questions are interesting, I can verify my ability to solve problems. Some questions are simple and easy to do. Sometimes it’s because I’m bored and find something to do. I don’t get paid for answering questions, but it’s a process of building trust. If I help someone solve a problem, if that person has some other more complicated problems later, it’s possible to reach other cooperation and get paid.
I think this is not easy to distinguish. If you want to back up the theme, you can duplicate or download the backup here.
The theme will have theme.liquid. However, to modify the style, you usually modify the css file. Different themes may have different naming methods, but they are mainly base.css, theme.css, app.css, etc. You can search here.
@wo answered well and honestly. And to not repeat all this, " I don’t get paid for answering questions, but it’s a process of building trust," is true. But as a community, I like to think people just want to help others. Yes, there could be some cooperation in the future. Some while helping, market their own Shopify apps or services. I think some overdo it, like answer for one sentence and then place images and text for 10 sentences about their apps. But most are moderate and on topic.
How to know it is a bad guy, well, that is hard but use some logic. Check them out, for me, Gmail and fiver account are not enough as there are so many scammers. True there are a legit, OK people but at least have a website, your own domain, email. You have no idea how many spammers and scammers are on the forum here, posting some Chatgtp answers and than offer $200 “service”. Just be calm and think before doing any action.